# 定义过滤方法，来过滤新闻显示的颜色
from flask import session,current_app,g
from functools import wraps

def index_class(index):
    if index == 1:
        return " first"
    elif index ==2:
        return  "second"
    elif index ==3:
        return  "third"
    else:
        return ""

# 封装用户登陆数据
def user_login_data(view_func):
    @wraps(view_func)
    def wrapper(*args,**kwargs):
        # 获取用户的登录状态
        user_id = session.get("user_id")
        # 获取用户登录数据
        user = None
        if user_id:
            try:
                from info.models import User
                user = User.query.get(user_id)
            except Exception as e:
                current_app.logger.error(e)

        # 使用g对象保存
        g.user=user
        return view_func(*args,**kwargs)
    return wrapper